\begin{table}
\centering
\caption{\label{tab: agribusiness - persistence - shares}Persistence of a firm's market share in an upstream market.}
\centering
\begin{tabular}[t]{lcccc}
\toprule
  & AR(1) & AR(1)  & AR(1)   & AR(1)   \\
\midrule
$\rho$ & 0.533*** & 0.618*** & 0.659*** & 0.695***\\
 & (0.004) & (0.008) & (0.013) & (0.031)\\
\midrule
Upstream market definition & AMC/County & Mesoregion & Microregion & State/Province\\
Observations & 33790006 & 5523836 & 1690518 & 379080\\
R2 & 0.283 & 0.383 & 0.432 & 0.488\\
\bottomrule
\end{tabular}
\end{table}
